<%@ page language="java" import="java.util.*,java.sql.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'enrollOnLine.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

  </head>
  
  <body>
    <form action="dostu.jsp" method="post">
		<table>
			<tr>
				<td>用户名</td>
				<td><input type="text" name="userName"></td>
			</tr>
			<tr>
				<td>密码</td>
				<td><input type="password" name="password"></td>
			</tr>
			<tr>
				<td>手机号</td>
				<td><input type="text" name="telephone"></td>
			</tr>
			
			<%List list = new ArrayList();
			try{
    			Class.forName("com.mysql.jdbc.Driver");
    		}catch(ClassNotFoundException e){
    				e.printStackTrace();
    				return;
    		}
    		String url = "jdbc:mysql://localhost:3306/beifen";
    		String sql = "SELECT * FROM grade";
   
    		try {
    			Connection con = DriverManager.getConnection(url, "fang", "1234");
				Statement ps = con.createStatement();
				ResultSet rs = ps.executeQuery(sql);
				
				while(rs.next()){
					list.add(rs.getInt("id"));
				}
				rs.close();
			ps.close();
			con.close();
			
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
			%>
			<tr>
				<td>年级</td>
				<td>
				<select name="gradeid">
					<%
						//集合里的班级id循环放到下拉框的值里
						for(int i=0; i<list.size(); i++) {
							out.print("<option value=" + list.get(i) + ">" + list.get(i) + "</option>");
						}
					%>
				</select>
				</td>
				<!-- 第二题的年级输入框 -->
			<%-- 	<td><input type="text" name="grade"></td> --%>
			</tr>
			<tr>
				<td colspan="2">
					<input type="submit" value="注册">
				</td>
			</tr>
		</table>
	</form>
    
    
    





  </body>
</html>
